Patent DE-102008033293-A1 (DE)
Title: Floating switch valve useful as float switch and control valve or switching valve for the regulation of the water levels in purification plants or other liquid media, comprises a floating body, a pipeline, and two valve seats
Inventor: PRAEDEL HUBERT
IPC: C02F3/00
Filed: 2008-07-14
Abstract: The floating switch valve (19) comprises a floating body, a pipeline, and two valve seats (3, 4), where the pipeline tube flows into the floating body and the valve seats flow into two discharge tubes. A movable rubber valve ball is present in the interior of the floating body with magnetic or magnetizable core, which is movable around an axis between two end positions and the rubber valve ball is movable depending on each position of the floating body in its interior, so that each valve seat is locked in the both end positions of the floating body. The floating switch valve (19) comprises a floating body, a pipeline, and two valve seats (3, 4), where the pipeline tube flows into the floating body and the valve seats flow into two discharge tubes. A movable rubber valve ball is present in the interior of the floating body with magnetic or magnetizable core, which is movable around an axis between two end positions and the rubber valve ball is movable depending on each position of the floating body in its interior, so that each valve seat is locked in the both end positions of the floating body. An electrical-magnetic sensor is arranged outside of the floating body to the valve seat and detects the position of the rubber valve ball with magnetic core in a contactless manner. The floating body is a pressure-tight vessel movable around the axis with two end positions. The rubber valve ball is a valve ball (7) made of rubber or plastic with an iron- or steel core filling. The valve ball positively engages into the valve seat and the pipeline tube and the discharge tubes are flexible. The vessel is a plastic tube (1), which has a floater (6) made of floatable material at one end, and is mechanically led at the other end over a fixed rotating point, so that while increasing and decreasing the water level, the floater raises or lowers the floating switch valve, the valve ball rolls onto the lower valve ball seat at high water level, the lower valve ball seat and the discharge tube lock through their net weight and the valve ball seat exits at low water level in an inverted manner to roll the valve ball seat and lock the discharge tube. The electrical-magnetic sensor is a bridge sensor, whose magnetic range is reinforced by an additional permanent magnet and the permanent magnet is fastened in the vicinity of the bridge sensor, so that the magnetic core of the valve ball bundles during approaching the magnetic field of the permanent magnet, on which bridge sensor transmits, so that a signal is transferable from the bridge sensor over a flexible pipe. The switching point of the desired of maximum and minimum water levels through the distance of the rotating point to the floater, by which the depth of the ball valve seats and the inclination angle of the valve seat are determined to each other. An independent claim is included for a method for operating floating switch valves.